WO1996037325A1 - Cobalt metal agglomerates, process for producing the same and their use - Google Patents
Cobalt metal agglomerates, process for producing the same and their use Download PDFInfo
- Publication number
- WO1996037325A1 WO1996037325A1 PCT/EP1996/002053 EP9602053W WO9637325A1 WO 1996037325 A1 WO1996037325 A1 WO 1996037325A1 EP 9602053 W EP9602053 W EP 9602053W WO 9637325 A1 WO9637325 A1 WO 9637325A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cobalt
- cobalt metal
- metal agglomerates
- agglomerates
- spherical
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- Cobalt metal agglomerates Process for their preparation and their use
- the present invention relates to cobalt metal agglomerates consisting of peanut-shaped primary particles with average particle sizes in the range from 0.5 to
- Fine-particle cobalt metal is mainly used as a binder in the production of hard metal and cutting tools based on various hard materials, e.g. WC, diamond, SiC and CBN used.
- various hard materials e.g. WC, diamond, SiC and CBN used.
- the e.g. Cobalt metals used in diamond tool manufacture meet special requirements. On the one hand, these provide that impurities such as Al, Ca, Mg, S and Si should be avoided, since these elements easily form stable oxides with the residual oxygen of the cobalt metal powder and thus cause undesired porosity in the segments.
- cobalt metals are in the form of
- ultrafine powders Due to their FSSS value of ⁇ 10 ⁇ m, ultrafine powders differ from extra-fine powders, whose FSSS values are between 1.2-1.4 ⁇ m.
- cobalt metal powder which has these required properties.
- cobalt metal agglomerates consisting of peanut-shaped primary particles with average particle sizes in the range from 0.5 to 2 ⁇ m, characterized in that they have a preferably spherical secondary structure with average agglomerate diameters from 3 to 50 ⁇ m.
- the agglomerate diameter of the cobalt metal agglomerates according to the invention is preferably 5 to 20 ⁇ m. Due to their spherical secondary structure, they are characterized by good flow behavior.
- the non-uniformly elongated primary particles preferably have an average particle length of 0.5 to 2 ⁇ m and generally a diameter of ⁇ 0.5 ⁇ m.
- Example 3 shows scanning electron micrographs of the cobalt metal powder agglomerates according to the invention produced according to Example 3 in 1000 and 5000 times magnification.
- the specific surfaces of the cobalt metal agglomerates according to the invention are preferably 2 to 3.5 m 2 / g. These surfaces and the small particle sizes of the primary particles are responsible for the high sintering activity of the cobalt metal agglomerates according to the invention, from which sintered bodies with densities of 8.5 g / cm 3 can be obtained even at temperatures of 700 ° C.
- the invention also relates to a process for the preparation of the cobalt metal agglomerates according to the invention.
- the temperature range for the reaction is preferably between 60 and 90 ° C.
- Cobalt (II) hydroxide or basic cobalt carbonate obtained in this way is then subjected to the reduction.
- the reaction is carried out with gaseous reducing agents, such as preferably hydrogen, methane, nitrous oxide and / or carbon monoxide, at furnace temperatures of 300 to 800 ° C., preferably 350 to 650 ° C.
- the cobalt metal agglomerates according to the invention have a very good flow behavior due to their spherical secondary structure.
- the cobalt metal powders according to the invention are particularly suitable as binders in the production of hard metal and / or diamond tools. It should be noted that the cobalt metal powder agglomerates according to the invention can advantageously be used both alone and in combination with other binder metals.
- This invention thus relates to the use of the cobalt metal agglomerates according to the invention for the production of cobalt sintered bodies and for the production of composite sintered bodies based on cobalt metal and hard materials from the group consisting of diamond, CBN, WC, SiC and Al 2 O 3 .
- the cobalt metal powder agglomerates according to the invention are also particularly suitable for incorporation into the positive nickel hydroxide-containing electrode mass of rechargeable batteries, based on nickel-cadmium or nickel-metal hydride technologies.
- This invention therefore also relates to the use of the cobalt metal agglomerates according to the invention as a component for producing the positive electrode in alkaline secondary batteries based on nickel-cadmium or nickel-metal hydride technologies.
- the basic cobalt carbonate thus obtained showed a Co content of 54.3% in chemical analysis, the content of the carbonate was determined to be 32.3%.
- the yield was 426 g of a spherically agglomerated, phase-pure cobalt (II) hydroxide with a Co content of 63.3%.
- spherical basic cobalt carbonate produced according to Example 1, were treated analogously to Example 3.
- the yield was 54 g of spherical cobalt metal powder.
- Fig. 4 shows raster electronic recordings in 500x and 5000x magnification.
- Table 1 and FIG. 1 show the hardness of a sintered body, produced from the cobalt metal powder agglomerate according to the invention, for example! 3, compared to sintered bodies, made from commercially available ultra and extra fine cobalt metal powders, depending on the sintering temperatures. It can clearly be seen that the cobalt metal powder according to the invention achieves high hardnesses even at sintering temperatures of 700 ° C., which hardness also remains constant over the entire temperature range up to 980 ° C. Table 1: (hardening)
- Table 2 and FIG. 2 show the densities of a sintered body, produced from the cobalt metal powder agglomerate according to the invention from Example 3, in comparison to
- Sintered bodies made from commercially available ultra and extra fine cobalt metal powders, depending on the sintering temperatures.
- Table 3 compares the particle sizes and specific BET surface areas of the cobalt metal agglomerates (determined by the nitrogen I-point method in accordance with DIN 66 131) from Example 3 to those of commercially available ultra- and extra-fine cobalt powder. Table 3: (particle size and specific surfaces)
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Electrochemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Processing Of Solid Wastes (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96916063A EP0828577B1 (en) | 1995-05-26 | 1996-05-14 | Cobalt metal agglomerates, process for producing the same and their use |
DE59601152T DE59601152D1 (en) | 1995-05-26 | 1996-05-14 | COBALT METAL AGGLOMERATES, METHOD FOR THE PRODUCTION AND USE THEREOF |
CA002221773A CA2221773C (en) | 1995-05-26 | 1996-05-14 | Cobalt metal agglomerates, process for producing the same and their use |
AU58961/96A AU695628B2 (en) | 1995-05-26 | 1996-05-14 | Cobalt metal agglomerates, process for their production and their use |
JP8535334A JPH11505884A (en) | 1995-05-26 | 1996-05-14 | Cobalt metal agglomerates, their production and use |
US08/952,552 US6019813A (en) | 1995-05-26 | 1996-05-14 | Cobalt metal agglomerates, process for producing the same and their use |
NO19975416A NO319737B1 (en) | 1995-05-26 | 1997-11-25 | Cobalt metal agglomerates, and methods of preparation and use thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19519329A DE19519329C1 (en) | 1995-05-26 | 1995-05-26 | Cobalt metal agglomerates, process for their preparation and their use |
DE19519329.6 | 1995-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996037325A1 true WO1996037325A1 (en) | 1996-11-28 |
Family
ID=7762916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/002053 WO1996037325A1 (en) | 1995-05-26 | 1996-05-14 | Cobalt metal agglomerates, process for producing the same and their use |
Country Status (13)
Country | Link |
---|---|
US (1) | US6019813A (en) |
EP (1) | EP0828577B1 (en) |
JP (1) | JPH11505884A (en) |
KR (1) | KR100420605B1 (en) |
CN (1) | CN1080155C (en) |
AT (1) | ATE175606T1 (en) |
AU (1) | AU695628B2 (en) |
DE (2) | DE19519329C1 (en) |
NO (1) | NO319737B1 (en) |
RU (1) | RU2158656C2 (en) |
TW (1) | TW402641B (en) |
WO (1) | WO1996037325A1 (en) |
ZA (1) | ZA964187B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005023461A1 (en) * | 2003-08-29 | 2005-03-17 | Sumitomo Metal Mining Co., Ltd. | Nickel powder and process for producing the same |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19540076C1 (en) * | 1995-10-27 | 1997-05-22 | Starck H C Gmbh Co Kg | Ultrafine cobalt metal powder, process for its preparation and use of the cobalt metal powder and the cobalt carbonate |
JP4691241B2 (en) * | 2000-09-29 | 2011-06-01 | ソニー株式会社 | Method for producing high purity cobalt and method for purifying cobalt chloride |
US7442227B2 (en) | 2001-10-09 | 2008-10-28 | Washington Unniversity | Tightly agglomerated non-oxide particles and method for producing the same |
EP2425028B1 (en) * | 2009-04-27 | 2017-10-04 | Sandvik Intellectual Property AB | Cemented carbide tools |
EP2638990B1 (en) | 2010-11-08 | 2019-05-08 | Namics Corporation | Manufacturing method for metal particles |
KR101239086B1 (en) * | 2011-04-26 | 2013-03-06 | 전자부품연구원 | Positive composition for Lithium secondary battery using spherical porous cobalt oxide and manufacturing method thereof |
RU2560901C1 (en) * | 2014-07-28 | 2015-08-20 | Общество с ограниченной ответственностью "Завод электрохимических преобразователей" (ООО "ЗЭП") | Method of metal fine disperse powder production |
PL3592706T3 (en) * | 2017-03-08 | 2023-09-04 | Umicore | Precursors of cathode materials for a rechargeable lithium ion battery |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4093450A (en) * | 1977-03-07 | 1978-06-06 | Sherritt Gordon Mines Limited | Production of ultrafine cobalt powder from dilute solution |
DE4343594C1 (en) * | 1993-12-21 | 1995-02-02 | Starck H C Gmbh Co Kg | Cobalt metal powder and a composite sintered body manufactured from it |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3855016A (en) * | 1971-03-24 | 1974-12-17 | Graham Magnetics Inc | Acicular cobalt powders having high squarenesss ratios |
GB1436595A (en) * | 1973-03-30 | 1976-05-19 | Sherritt Gordon Mines Ltd | Process for the production of finely divided cobalt powders |
US4469505A (en) * | 1980-11-19 | 1984-09-04 | Gte Products Corporation | Method for producing cobalt metal powder |
US4588572A (en) * | 1984-10-12 | 1986-05-13 | Mooney Chemicals, Inc. | Process for preparing aqueous cobalt (II) carbonate slurries, and slurries so produced |
US4927456A (en) * | 1987-05-27 | 1990-05-22 | Gte Products Corporation | Hydrometallurgical process for producing finely divided iron based powders |
US4798623A (en) * | 1988-02-19 | 1989-01-17 | Gte Products Corporation | Method for producing fine cobalt metal powder |
SE502931C2 (en) * | 1994-06-10 | 1996-02-26 | Sandvik Ab | Method for producing powder for WC hard material |
HU213130B (en) * | 1994-07-11 | 1997-02-28 | Bank Rt Polgari | Improved information carrying magnetic tape |
-
1995
- 1995-05-26 DE DE19519329A patent/DE19519329C1/en not_active Expired - Fee Related
-
1996
- 1996-04-30 TW TW085105114A patent/TW402641B/en not_active IP Right Cessation
- 1996-05-14 AU AU58961/96A patent/AU695628B2/en not_active Ceased
- 1996-05-14 WO PCT/EP1996/002053 patent/WO1996037325A1/en active IP Right Grant
- 1996-05-14 CN CN96194173A patent/CN1080155C/en not_active Expired - Fee Related
- 1996-05-14 AT AT96916063T patent/ATE175606T1/en active
- 1996-05-14 US US08/952,552 patent/US6019813A/en not_active Expired - Lifetime
- 1996-05-14 KR KR1019970708463A patent/KR100420605B1/en not_active IP Right Cessation
- 1996-05-14 JP JP8535334A patent/JPH11505884A/en not_active Ceased
- 1996-05-14 RU RU97122087/02A patent/RU2158656C2/en active
- 1996-05-14 EP EP96916063A patent/EP0828577B1/en not_active Expired - Lifetime
- 1996-05-14 DE DE59601152T patent/DE59601152D1/en not_active Expired - Lifetime
- 1996-05-24 ZA ZA964187A patent/ZA964187B/en unknown
-
1997
- 1997-11-25 NO NO19975416A patent/NO319737B1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4093450A (en) * | 1977-03-07 | 1978-06-06 | Sherritt Gordon Mines Limited | Production of ultrafine cobalt powder from dilute solution |
DE4343594C1 (en) * | 1993-12-21 | 1995-02-02 | Starck H C Gmbh Co Kg | Cobalt metal powder and a composite sintered body manufactured from it |
Non-Patent Citations (1)
Title |
---|
KAMESWARI: "Preparation and Characterization of fine Cobalt metal and Oxide Powders", PMAI NEWS LETTER, vol. 4, no. 4, September 1979 (1979-09-01), pages 17 - 21, XP000600537 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005023461A1 (en) * | 2003-08-29 | 2005-03-17 | Sumitomo Metal Mining Co., Ltd. | Nickel powder and process for producing the same |
US7186289B2 (en) | 2003-08-29 | 2007-03-06 | Sunitomo Metal Mining Co., Ltd. | Nickel powder and production method therefor |
Also Published As
Publication number | Publication date |
---|---|
NO975416D0 (en) | 1997-11-25 |
DE19519329C1 (en) | 1996-11-28 |
ATE175606T1 (en) | 1999-01-15 |
AU695628B2 (en) | 1998-08-20 |
CN1194602A (en) | 1998-09-30 |
KR19990021988A (en) | 1999-03-25 |
KR100420605B1 (en) | 2004-05-20 |
US6019813A (en) | 2000-02-01 |
AU5896196A (en) | 1996-12-11 |
JPH11505884A (en) | 1999-05-25 |
NO975416L (en) | 1997-11-25 |
NO319737B1 (en) | 2005-09-12 |
ZA964187B (en) | 1996-12-04 |
TW402641B (en) | 2000-08-21 |
CN1080155C (en) | 2002-03-06 |
EP0828577B1 (en) | 1999-01-13 |
RU2158656C2 (en) | 2000-11-10 |
EP0828577A1 (en) | 1998-03-18 |
DE59601152D1 (en) | 1999-02-25 |
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